Much of the information presented in this summary is drawn from the U.S. Department of Energy’s (DOE) Building Energy Codes Program and the Building Codes Assistance Project (BCAP). For more detailed information about building energy codes, visit the DOE and BCAP websites.

No schedule exists for making statewide changes to the Hawaii Model Energy Code (HMEC). Each county reviews its code periodically. If changes are deemed necessary on a statewide basis, the Department of Business, Economic Development, and Tourism (DBEDT) submits proposed legislation to the state legislature. Following final passage, any new criteria becomes effective after an appropriate lead-in time.

In May 2009, the Hawaii County Council adopted the 2006 IECC with state-specific amendments. Among them, the new code gives options for roof insulation including cool roofs, advanced ventilation, and low emittance roofs by testing or specification. It also has more stringent requirements regarding pools as well as mandatory HVAC and other system commissioning.

On October 13, 2009, the Hawaii Building Code Council approved the 2006 IECC with state-specific amendments as the statewide energy code.

The counties of Hawaii are free to modify the statewide code, as long as the codes they adopt are at least as stringent.

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